<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <link rel="stylesheet" href="./public/bt/css/bootstrap.min.css">
    <link rel="stylesheet" href="./public/index.css">
</head>
<body>
    这是首页
    <hr>
    <?php if(isset($_SESSION['username'])): ?>
        欢迎<?php echo $_SESSION['username'] ?> 回来!<a href="?a=Mumber&c=out">退出</a>
    <?php else: ?>
        <a href="?a=Mumber&c=login" type="submit" class="btn btn-primary">登录</a>
        <a href="?a=Mumber&c=reg" type="submit" class="btn btn-primary">注册</a>
    <?php endif ?>
</body>
</html>